A theatergoer took to Twitter to post a photo of the protester, who held up a “Re-elect Trump 2020” sign close to the stage at the Longacre Theatre during the curtain call of the show. According to TMZ, De Niro was not present during the protest.

“He was escorted shortly after,” audience member Joe Del Vicario writes. “It's sad that people can't enjoy a beautiful show and embrace its unifying message without politicizing it.”

The times we live in. At the end of A Bronx Tale, a man turned around and faced the audience to show us how big of a pair he has. He was escorted shortly after. It's sad that people can't enjoy a beautiful show and embrace its unifying message without politicizing it. #broadwaypic.twitter.com/6tVN4Qf4d6

The moment is assumed to be a response to De Niro and Trump’s brewing feud after the actor’s blunt onstage comments at the Tonys. In response, Trump called out De Niro on Twitter, referring to the actor as “a very low IQ individual.”

"I watched him last night and truly believe he may be 'punch-drunk.' I guess he doesn’t realize the economy is the best it’s ever been with employment being at an all-time high, and many companies pouring back into our country. Wake up Punchy,” Trump tweeted of the actor after the Tonys.

Conservative media also blasted the actor for his chant. Greg Gutfeld, co-host of Fox News show The Five, called the actor an "irrelevant gasbag," whereas host Laura Ingraham suggested that his comment would simply help Trump win re-election in 2020.

The Hollywood Reporter has reached out to De Niro's rep for comment. The Shubert Organization has no comment.